1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
17 *
18 * The full GNU General Public License is included in this distribution in the
19 * file called LICENSE.
20 *
21 * Contact Information:
22 * Intel Linux Wireless <ilw@linux.intel.com>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
24 *
25 *****************************************************************************/
26 /*
27 * Please use this file (iwl-dev.h) for driver implementation definitions.
28 * Please use iwl-commands.h for uCode API definitions.
29 * Please use iwl-4965-hw.h for hardware-related definitions.
30 */
31
32 #ifndef __iwl_dev_h__
33 #define __iwl_dev_h__
34
35 #include <linux/pci.h> /* for struct pci_device_id */
36 #include <linux/kernel.h>
37 #include <net/ieee80211_radiotap.h>
38
39 #define DRV_NAME "iwlagn"
40 #include "iwl-rfkill.h"
41 #include "iwl-eeprom.h"
42 #include "iwl-4965-hw.h"
43 #include "iwl-csr.h"
44 #include "iwl-prph.h"
45 #include "iwl-debug.h"
46 #include "iwl-led.h"
47 #include "iwl-power.h"
48 #include "iwl-agn-rs.h"
49
50 /* configuration for the iwl4965 */
51 extern struct iwl_cfg iwl4965_agn_cfg;
52 extern struct iwl_cfg iwl5300_agn_cfg;
53 extern struct iwl_cfg iwl5100_agn_cfg;
54 extern struct iwl_cfg iwl5350_agn_cfg;
55 extern struct iwl_cfg iwl5100_bg_cfg;
56 extern struct iwl_cfg iwl5100_abg_cfg;
57 extern struct iwl_cfg iwl5150_agn_cfg;
58
59 /* CT-KILL constants */
60 #define CT_KILL_THRESHOLD 110 /* in Celsius */
61
62 /* Default noise level to report when noise measurement is not available.
63 * This may be because we're:
64 * 1) Not associated (4965, no beacon statistics being sent to driver)
65 * 2) Scanning (noise measurement does not apply to associated channel)
66 * 3) Receiving CCK (3945 delivers noise info only for OFDM frames)
67 * Use default noise value of -127 ... this is below the range of measurable
68 * Rx dBm for either 3945 or 4965, so it can indicate "unmeasurable" to user.
69 * Also, -127 works better than 0 when averaging frames with/without
70 * noise info (e.g. averaging might be done in app); measured dBm values are
71 * always negative ... using a negative value as the default keeps all
72 * averages within an s8's (used in some apps) range of negative values. */
73 #define IWL_NOISE_MEAS_NOT_AVAILABLE (-127)
74
75 /*
76 * RTS threshold here is total size [2347] minus 4 FCS bytes
77 * Per spec:
78 * a value of 0 means RTS on all data/management packets
79 * a value > max MSDU size means no RTS
80 * else RTS for data/management frames where MPDU is larger
81 * than RTS value.
82 */
83 #define DEFAULT_RTS_THRESHOLD 2347U
84 #define MIN_RTS_THRESHOLD 0U
85 #define MAX_RTS_THRESHOLD 2347U
86 #define MAX_MSDU_SIZE 2304U
87 #define MAX_MPDU_SIZE 2346U
88 #define DEFAULT_BEACON_INTERVAL 100U
89 #define DEFAULT_SHORT_RETRY_LIMIT 7U
90 #define DEFAULT_LONG_RETRY_LIMIT 4U
91
92 struct iwl_rx_mem_buffer {
93 dma_addr_t real_dma_addr;
94 dma_addr_t aligned_dma_addr;
95 struct sk_buff *skb;
96 struct list_head list;
97 };
98
99 /*
100 * Generic queue structure
101 *
102 * Contains common data for Rx and Tx queues
103 */
104 struct iwl_queue {
105 int n_bd; /* number of BDs in this queue */
106 int write_ptr; /* 1-st empty entry (index) host_w*/
107 int read_ptr; /* last used entry (index) host_r*/
108 dma_addr_t dma_addr; /* physical addr for BD's */
109 int n_window; /* safe queue window */
110 u32 id;
111 int low_mark; /* low watermark, resume queue if free
112 * space more than this */
113 int high_mark; /* high watermark, stop queue if free
114 * space less than this */
115 } __attribute__ ((packed));
116
117 /* One for each TFD */
118 struct iwl_tx_info {
119 struct sk_buff *skb[IWL_NUM_OF_TBS - 1];
120 };
121
122 /**
123 * struct iwl_tx_queue - Tx Queue for DMA
124 * @q: generic Rx/Tx queue descriptor
125 * @bd: base of circular buffer of TFDs
126 * @cmd: array of command/Tx buffers
127 * @dma_addr_cmd: physical address of cmd/tx buffer array
128 * @txb: array of per-TFD driver data
129 * @need_update: indicates need to update read/write index
130 * @sched_retry: indicates queue is high-throughput aggregation (HT AGG) enabled
131 *
132 * A Tx queue consists of circular buffer of BDs (a.k.a. TFDs, transmit frame
133 * descriptors) and required locking structures.
134 */
135 struct iwl_tx_queue {
136 struct iwl_queue q;
137 struct iwl_tfd *tfds;
138 struct iwl_cmd *cmd[TFD_TX_CMD_SLOTS];
139 struct iwl_tx_info *txb;
140 u8 need_update;
141 u8 sched_retry;
142 u8 active;
143 u8 swq_id;
144 };
145
146 #define IWL_NUM_SCAN_RATES (2)
147
148 struct iwl4965_channel_tgd_info {
149 u8 type;
150 s8 max_power;
151 };
152
153 struct iwl4965_channel_tgh_info {
154 s64 last_radar_time;
155 };
156
157 /*
158 * One for each channel, holds all channel setup data
159 * Some of the fields (e.g. eeprom and flags/max_power_avg) are redundant
160 * with one another!
161 */
162 struct iwl_channel_info {
163 struct iwl4965_channel_tgd_info tgd;
164 struct iwl4965_channel_tgh_info tgh;
165 struct iwl_eeprom_channel eeprom; /* EEPROM regulatory limit */
166 struct iwl_eeprom_channel fat_eeprom; /* EEPROM regulatory limit for
167 * FAT channel */
168
169 u8 channel; /* channel number */
170 u8 flags; /* flags copied from EEPROM */
171 s8 max_power_avg; /* (dBm) regul. eeprom, normal Tx, any rate */
172 s8 curr_txpow; /* (dBm) regulatory/spectrum/user (not h/w) limit */
173 s8 min_power; /* always 0 */
174 s8 scan_power; /* (dBm) regul. eeprom, direct scans, any rate */
175
176 u8 group_index; /* 0-4, maps channel to group1/2/3/4/5 */
177 u8 band_index; /* 0-4, maps channel to band1/2/3/4/5 */
178 enum ieee80211_band band;
179
180 /* FAT channel info */
181 s8 fat_max_power_avg; /* (dBm) regul. eeprom, normal Tx, any rate */
182 s8 fat_curr_txpow; /* (dBm) regulatory/spectrum/user (not h/w) */
183 s8 fat_min_power; /* always 0 */
184 s8 fat_scan_power; /* (dBm) eeprom, direct scans, any rate */
185 u8 fat_flags; /* flags copied from EEPROM */
186 u8 fat_extension_channel; /* HT_IE_EXT_CHANNEL_* */
187 };
188
189
190 #define IWL_TX_FIFO_AC0 0
191 #define IWL_TX_FIFO_AC1 1
192 #define IWL_TX_FIFO_AC2 2
193 #define IWL_TX_FIFO_AC3 3
194 #define IWL_TX_FIFO_HCCA_1 5
195 #define IWL_TX_FIFO_HCCA_2 6
196 #define IWL_TX_FIFO_NONE 7
197
198 /* Minimum number of queues. MAX_NUM is defined in hw specific files */
199 #define IWL_MIN_NUM_QUEUES 4
200
201 /* Power management (not Tx power) structures */
202
203 enum iwl_pwr_src {
204 IWL_PWR_SRC_VMAIN,
205 IWL_PWR_SRC_VAUX,
206 };
207
208 #define IEEE80211_DATA_LEN 2304
209 #define IEEE80211_4ADDR_LEN 30
210 #define IEEE80211_HLEN (IEEE80211_4ADDR_LEN)
211 #define IEEE80211_FRAME_LEN (IEEE80211_DATA_LEN + IEEE80211_HLEN)
212
213 struct iwl_frame {
214 union {
215 struct ieee80211_hdr frame;
216 struct iwl_tx_beacon_cmd beacon;
217 u8 raw[IEEE80211_FRAME_LEN];
218 u8 cmd[360];
219 } u;
220 struct list_head list;
221 };
222
223 #define SEQ_TO_SN(seq) (((seq) & IEEE80211_SCTL_SEQ) >> 4)
224 #define SN_TO_SEQ(ssn) (((ssn) << 4) & IEEE80211_SCTL_SEQ)
225 #define MAX_SN ((IEEE80211_SCTL_SEQ) >> 4)
226
227 enum {
228 /* CMD_SIZE_NORMAL = 0, */
229 CMD_SIZE_HUGE = (1 << 0),
230 /* CMD_SYNC = 0, */
231 CMD_ASYNC = (1 << 1),
232 /* CMD_NO_SKB = 0, */
233 CMD_WANT_SKB = (1 << 2),
234 };
235
236 struct iwl_cmd;
237 struct iwl_priv;
238
239 struct iwl_cmd_meta {
240 struct iwl_cmd_meta *source;
241 union {
242 struct sk_buff *skb;
243 int (*callback)(struct iwl_priv *priv,
244 struct iwl_cmd *cmd, struct sk_buff *skb);
245 } __attribute__ ((packed)) u;
246
247 /* The CMD_SIZE_HUGE flag bit indicates that the command
248 * structure is stored at the end of the shared queue memory. */
249 u32 flags;
250 DECLARE_PCI_UNMAP_ADDR(mapping)
251 DECLARE_PCI_UNMAP_LEN(len)
252 } __attribute__ ((packed));
253
254 #define IWL_CMD_MAX_PAYLOAD 320
255
256 /**
257 * struct iwl_cmd
258 *
259 * For allocation of the command and tx queues, this establishes the overall
260 * size of the largest command we send to uCode, except for a scan command
261 * (which is relatively huge; space is allocated separately).
262 */
263 struct iwl_cmd {
264 struct iwl_cmd_meta meta; /* driver data */
265 struct iwl_cmd_header hdr; /* uCode API */
266 union {
267 u32 flags;
268 u8 val8;
269 u16 val16;
270 u32 val32;
271 struct iwl_tx_cmd tx;
272 u8 payload[IWL_CMD_MAX_PAYLOAD];
273 } __attribute__ ((packed)) cmd;
274 } __attribute__ ((packed));
275
276
277 struct iwl_host_cmd {
278 u8 id;
279 u16 len;
280 struct iwl_cmd_meta meta;
281 const void *data;
282 };
283
284 #define TFD_MAX_PAYLOAD_SIZE (sizeof(struct iwl_cmd) - \
285 sizeof(struct iwl_cmd_meta))
286
287 /*
288 * RX related structures and functions
289 */
290 #define RX_FREE_BUFFERS 64
291 #define RX_LOW_WATERMARK 8
292
293 #define SUP_RATE_11A_MAX_NUM_CHANNELS 8
294 #define SUP_RATE_11B_MAX_NUM_CHANNELS 4
295 #define SUP_RATE_11G_MAX_NUM_CHANNELS 12
296
297 /**
298 * struct iwl_rx_queue - Rx queue
299 * @read: Shared index to newest available Rx buffer
300 * @write: Shared index to oldest written Rx packet
301 * @free_count: Number of pre-allocated buffers in rx_free
302 * @rx_free: list of free SKBs for use
303 * @rx_used: List of Rx buffers with no SKB
304 * @need_update: flag to indicate we need to update read/write index
305 *
306 * NOTE: rx_free and rx_used are used as a FIFO for iwl_rx_mem_buffers
307 */
308 struct iwl_rx_queue {
309 __le32 *bd;
310 dma_addr_t dma_addr;
311 struct iwl_rx_mem_buffer pool[RX_QUEUE_SIZE + RX_FREE_BUFFERS];
312 struct iwl_rx_mem_buffer *queue[RX_QUEUE_SIZE];
313 u32 read;
314 u32 write;
315 u32 free_count;
316 struct list_head rx_free;
317 struct list_head rx_used;
318 int need_update;
319 struct iwl_rb_status *rb_stts;
320 dma_addr_t rb_stts_dma;
321 spinlock_t lock;
322 };
323
324 #define IWL_SUPPORTED_RATES_IE_LEN 8
325
326 #define MAX_TID_COUNT 9
327
328 #define IWL_INVALID_RATE 0xFF
329 #define IWL_INVALID_VALUE -1
330
331 /**
332 * struct iwl_ht_agg -- aggregation status while waiting for block-ack
333 * @txq_id: Tx queue used for Tx attempt
334 * @frame_count: # frames attempted by Tx command
335 * @wait_for_ba: Expect block-ack before next Tx reply
336 * @start_idx: Index of 1st Transmit Frame Descriptor (TFD) in Tx window
337 * @bitmap0: Low order bitmap, one bit for each frame pending ACK in Tx window
338 * @bitmap1: High order, one bit for each frame pending ACK in Tx window
339 * @rate_n_flags: Rate at which Tx was attempted
340 *
341 * If REPLY_TX indicates that aggregation was attempted, driver must wait
342 * for block ack (REPLY_COMPRESSED_BA). This struct stores tx reply info
343 * until block ack arrives.
344 */
345 struct iwl_ht_agg {
346 u16 txq_id;
347 u16 frame_count;
348 u16 wait_for_ba;
349 u16 start_idx;
350 u64 bitmap;
351 u32 rate_n_flags;
352 #define IWL_AGG_OFF 0
353 #define IWL_AGG_ON 1
354 #define IWL_EMPTYING_HW_QUEUE_ADDBA 2
355 #define IWL_EMPTYING_HW_QUEUE_DELBA 3
356 u8 state;
357 };
358
359
360 struct iwl_tid_data {
361 u16 seq_number;
362 u16 tfds_in_queue;
363 struct iwl_ht_agg agg;
364 };
365
366 struct iwl_hw_key {
367 enum ieee80211_key_alg alg;
368 int keylen;
369 u8 keyidx;
370 u8 key[32];
371 };
372
373 union iwl4965_ht_rate_supp {
374 u16 rates;
375 struct {
376 u8 siso_rate;
377 u8 mimo_rate;
378 };
379 };
380
381 #define CFG_HT_RX_AMPDU_FACTOR_DEF (0x3)
382 #define CFG_HT_MPDU_DENSITY_2USEC (0x5)
383 #define CFG_HT_MPDU_DENSITY_DEF CFG_HT_MPDU_DENSITY_2USEC
384
385 struct iwl_ht_info {
386 /* self configuration data */
387 u8 is_ht;
388 u8 supported_chan_width;
389 u8 sm_ps;
390 u8 is_green_field;
391 u8 sgf; /* HT_SHORT_GI_* short guard interval */
392 u8 max_amsdu_size;
393 u8 ampdu_factor;
394 u8 mpdu_density;
395 struct ieee80211_mcs_info mcs;
396 /* BSS related data */
397 u8 extension_chan_offset;
398 u8 tx_chan_width;
399 u8 ht_protection;
400 u8 non_GF_STA_present;
401 };
402
403 union iwl_qos_capabity {
404 struct {
405 u8 edca_count:4; /* bit 0-3 */
406 u8 q_ack:1; /* bit 4 */
407 u8 queue_request:1; /* bit 5 */
408 u8 txop_request:1; /* bit 6 */
409 u8 reserved:1; /* bit 7 */
410 } q_AP;
411 struct {
412 u8 acvo_APSD:1; /* bit 0 */
413 u8 acvi_APSD:1; /* bit 1 */
414 u8 ac_bk_APSD:1; /* bit 2 */
415 u8 ac_be_APSD:1; /* bit 3 */
416 u8 q_ack:1; /* bit 4 */
417 u8 max_len:2; /* bit 5-6 */
418 u8 more_data_ack:1; /* bit 7 */
419 } q_STA;
420 u8 val;
421 };
422
423 /* QoS structures */
424 struct iwl_qos_info {
425 int qos_active;
426 union iwl_qos_capabity qos_cap;
427 struct iwl_qosparam_cmd def_qos_parm;
428 };
429
430 #define STA_PS_STATUS_WAKE 0
431 #define STA_PS_STATUS_SLEEP 1
432
433 struct iwl_station_entry {
434 struct iwl_addsta_cmd sta;
435 struct iwl_tid_data tid[MAX_TID_COUNT];
436 u8 used;
437 u8 ps_status;
438 struct iwl_hw_key keyinfo;
439 };
440
441 /* one for each uCode image (inst/data, boot/init/runtime) */
442 struct fw_desc {
443 void *v_addr; /* access by driver */
444 dma_addr_t p_addr; /* access by card's busmaster DMA */
445 u32 len; /* bytes */
446 };
447
448 /* uCode file layout */
449 struct iwl_ucode {
450 __le32 ver; /* major/minor/API/serial */
451 __le32 inst_size; /* bytes of runtime instructions */
452 __le32 data_size; /* bytes of runtime data */
453 __le32 init_size; /* bytes of initialization instructions */
454 __le32 init_data_size; /* bytes of initialization data */
455 __le32 boot_size; /* bytes of bootstrap instructions */
456 u8 data[0]; /* data in same order as "size" elements */
457 };
458
459 struct iwl4965_ibss_seq {
460 u8 mac[ETH_ALEN];
461 u16 seq_num;
462 u16 frag_num;
463 unsigned long packet_time;
464 struct list_head list;
465 };
466
467 struct iwl_sensitivity_ranges {
468 u16 min_nrg_cck;
469 u16 max_nrg_cck;
470
471 u16 nrg_th_cck;
472 u16 nrg_th_ofdm;
473
474 u16 auto_corr_min_ofdm;
475 u16 auto_corr_min_ofdm_mrc;
476 u16 auto_corr_min_ofdm_x1;
477 u16 auto_corr_min_ofdm_mrc_x1;
478
479 u16 auto_corr_max_ofdm;
480 u16 auto_corr_max_ofdm_mrc;
481 u16 auto_corr_max_ofdm_x1;
482 u16 auto_corr_max_ofdm_mrc_x1;
483
484 u16 auto_corr_max_cck;
485 u16 auto_corr_max_cck_mrc;
486 u16 auto_corr_min_cck;
487 u16 auto_corr_min_cck_mrc;
488 };
489
490
491 #define KELVIN_TO_CELSIUS(x) ((x)-273)
492 #define CELSIUS_TO_KELVIN(x) ((x)+273)
493
494
495 /**
496 * struct iwl_hw_params
497 * @max_txq_num: Max # Tx queues supported
498 * @dma_chnl_num: Number of Tx DMA/FIFO channels
499 * @scd_bc_tbls_size: size of scheduler byte count tables
500 * @tx/rx_chains_num: Number of TX/RX chains
501 * @valid_tx/rx_ant: usable antennas
502 * @max_rxq_size: Max # Rx frames in Rx queue (must be power-of-2)
503 * @max_rxq_log: Log-base-2 of max_rxq_size
504 * @rx_buf_size: Rx buffer size
505 * @max_stations:
506 * @bcast_sta_id:
507 * @fat_channel: is 40MHz width possible in band 2.4
508 * BIT(IEEE80211_BAND_5GHZ) BIT(IEEE80211_BAND_5GHZ)
509 * @sw_crypto: 0 for hw, 1 for sw
510 * @max_xxx_size: for ucode uses
511 * @ct_kill_threshold: temperature threshold
512 * @calib_init_cfg: setup initial calibrations for the hw
513 * @struct iwl_sensitivity_ranges: range of sensitivity values
514 */
515 struct iwl_hw_params {
516 u8 max_txq_num;
517 u8 dma_chnl_num;
518 u16 scd_bc_tbls_size;
519 u8 tx_chains_num;
520 u8 rx_chains_num;
521 u8 valid_tx_ant;
522 u8 valid_rx_ant;
523 u16 max_rxq_size;
524 u16 max_rxq_log;
525 u32 rx_buf_size;
526 u32 max_pkt_size;
527 u8 max_stations;
528 u8 bcast_sta_id;
529 u8 fat_channel;
530 u8 sw_crypto;
531 u32 max_inst_size;
532 u32 max_data_size;
533 u32 max_bsm_size;
534 u32 ct_kill_threshold; /* value in hw-dependent units */
535 u32 calib_init_cfg;
536 const struct iwl_sensitivity_ranges *sens;
537 };
538
539
540 /******************************************************************************
541 *
542 * Functions implemented in core module which are forward declared here
543 * for use by iwl-[4-5].c
544 *
545 * NOTE: The implementation of these functions are not hardware specific
546 * which is why they are in the core module files.
547 *
548 * Naming convention --
549 * iwl_ <-- Is part of iwlwifi
550 * iwlXXXX_ <-- Hardware specific (implemented in iwl-XXXX.c for XXXX)
551 * iwl4965_bg_ <-- Called from work queue context
552 * iwl4965_mac_ <-- mac80211 callback
553 *
554 ****************************************************************************/
555 extern void iwl_update_chain_flags(struct iwl_priv *priv);
556 extern int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src);
557 extern const u8 iwl_bcast_addr[ETH_ALEN];
558 extern int iwl_rxq_stop(struct iwl_priv *priv);
559 extern void iwl_txq_ctx_stop(struct iwl_priv *priv);
560 extern int iwl_queue_space(const struct iwl_queue *q);
iwl_queue_used(const struct iwl_queue * q,int i)561 static inline int iwl_queue_used(const struct iwl_queue *q, int i)
562 {
563 return q->write_ptr > q->read_ptr ?
564 (i >= q->read_ptr && i < q->write_ptr) :
565 !(i < q->read_ptr && i >= q->write_ptr);
566 }
567
568
get_cmd_index(struct iwl_queue * q,u32 index,int is_huge)569 static inline u8 get_cmd_index(struct iwl_queue *q, u32 index, int is_huge)
570 {
571 /* This is for scan command, the big buffer at end of command array */
572 if (is_huge)
573 return q->n_window; /* must be power of 2 */
574
575 /* Otherwise, use normal size buffers */
576 return index & (q->n_window - 1);
577 }
578
579
580 struct iwl_dma_ptr {
581 dma_addr_t dma;
582 void *addr;
583 size_t size;
584 };
585
586 #define HT_SHORT_GI_20MHZ (1 << 0)
587 #define HT_SHORT_GI_40MHZ (1 << 1)
588
589 #define IWL_CHANNEL_WIDTH_20MHZ 0
590 #define IWL_CHANNEL_WIDTH_40MHZ 1
591
592 #define IWL_OPERATION_MODE_AUTO 0
593 #define IWL_OPERATION_MODE_HT_ONLY 1
594 #define IWL_OPERATION_MODE_MIXED 2
595 #define IWL_OPERATION_MODE_20MHZ 3
596
597 #define IWL_TX_CRC_SIZE 4
598 #define IWL_TX_DELIMITER_SIZE 4
599
600 #define TX_POWER_IWL_ILLEGAL_VOLTAGE -10000
601
602 /* Sensitivity and chain noise calibration */
603 #define INITIALIZATION_VALUE 0xFFFF
604 #define CAL_NUM_OF_BEACONS 20
605 #define MAXIMUM_ALLOWED_PATHLOSS 15
606
607 #define CHAIN_NOISE_MAX_DELTA_GAIN_CODE 3
608
609 #define MAX_FA_OFDM 50
610 #define MIN_FA_OFDM 5
611 #define MAX_FA_CCK 50
612 #define MIN_FA_CCK 5
613
614 #define AUTO_CORR_STEP_OFDM 1
615
616 #define AUTO_CORR_STEP_CCK 3
617 #define AUTO_CORR_MAX_TH_CCK 160
618
619 #define NRG_DIFF 2
620 #define NRG_STEP_CCK 2
621 #define NRG_MARGIN 8
622 #define MAX_NUMBER_CCK_NO_FA 100
623
624 #define AUTO_CORR_CCK_MIN_VAL_DEF (125)
625
626 #define CHAIN_A 0
627 #define CHAIN_B 1
628 #define CHAIN_C 2
629 #define CHAIN_NOISE_DELTA_GAIN_INIT_VAL 4
630 #define ALL_BAND_FILTER 0xFF00
631 #define IN_BAND_FILTER 0xFF
632 #define MIN_AVERAGE_NOISE_MAX_VALUE 0xFFFFFFFF
633
634 #define NRG_NUM_PREV_STAT_L 20
635 #define NUM_RX_CHAINS 3
636
637 enum iwl4965_false_alarm_state {
638 IWL_FA_TOO_MANY = 0,
639 IWL_FA_TOO_FEW = 1,
640 IWL_FA_GOOD_RANGE = 2,
641 };
642
643 enum iwl4965_chain_noise_state {
644 IWL_CHAIN_NOISE_ALIVE = 0, /* must be 0 */
645 IWL_CHAIN_NOISE_ACCUMULATE,
646 IWL_CHAIN_NOISE_CALIBRATED,
647 IWL_CHAIN_NOISE_DONE,
648 };
649
650 enum iwl4965_calib_enabled_state {
651 IWL_CALIB_DISABLED = 0, /* must be 0 */
652 IWL_CALIB_ENABLED = 1,
653 };
654
655
656 /*
657 * enum iwl_calib
658 * defines the order in which results of initial calibrations
659 * should be sent to the runtime uCode
660 */
661 enum iwl_calib {
662 IWL_CALIB_XTAL,
663 IWL_CALIB_DC,
664 IWL_CALIB_LO,
665 IWL_CALIB_TX_IQ,
666 IWL_CALIB_TX_IQ_PERD,
667 IWL_CALIB_BASE_BAND,
668 IWL_CALIB_MAX
669 };
670
671 /* Opaque calibration results */
672 struct iwl_calib_result {
673 void *buf;
674 size_t buf_len;
675 };
676
677 enum ucode_type {
678 UCODE_NONE = 0,
679 UCODE_INIT,
680 UCODE_RT
681 };
682
683 /* Sensitivity calib data */
684 struct iwl_sensitivity_data {
685 u32 auto_corr_ofdm;
686 u32 auto_corr_ofdm_mrc;
687 u32 auto_corr_ofdm_x1;
688 u32 auto_corr_ofdm_mrc_x1;
689 u32 auto_corr_cck;
690 u32 auto_corr_cck_mrc;
691
692 u32 last_bad_plcp_cnt_ofdm;
693 u32 last_fa_cnt_ofdm;
694 u32 last_bad_plcp_cnt_cck;
695 u32 last_fa_cnt_cck;
696
697 u32 nrg_curr_state;
698 u32 nrg_prev_state;
699 u32 nrg_value[10];
700 u8 nrg_silence_rssi[NRG_NUM_PREV_STAT_L];
701 u32 nrg_silence_ref;
702 u32 nrg_energy_idx;
703 u32 nrg_silence_idx;
704 u32 nrg_th_cck;
705 s32 nrg_auto_corr_silence_diff;
706 u32 num_in_cck_no_fa;
707 u32 nrg_th_ofdm;
708 };
709
710 /* Chain noise (differential Rx gain) calib data */
711 struct iwl_chain_noise_data {
712 u32 active_chains;
713 u32 chain_noise_a;
714 u32 chain_noise_b;
715 u32 chain_noise_c;
716 u32 chain_signal_a;
717 u32 chain_signal_b;
718 u32 chain_signal_c;
719 u16 beacon_count;
720 u8 disconn_array[NUM_RX_CHAINS];
721 u8 delta_gain_code[NUM_RX_CHAINS];
722 u8 radio_write;
723 u8 state;
724 };
725
726 #define EEPROM_SEM_TIMEOUT 10 /* milliseconds */
727 #define EEPROM_SEM_RETRY_LIMIT 1000 /* number of attempts (not time) */
728
729
730 enum {
731 MEASUREMENT_READY = (1 << 0),
732 MEASUREMENT_ACTIVE = (1 << 1),
733 };
734
735
736 #define IWL_MAX_NUM_QUEUES 20 /* FIXME: do dynamic allocation */
737
738 struct iwl_priv {
739
740 /* ieee device used by generic ieee processing code */
741 struct ieee80211_hw *hw;
742 struct ieee80211_channel *ieee_channels;
743 struct ieee80211_rate *ieee_rates;
744 struct iwl_cfg *cfg;
745
746 /* temporary frame storage list */
747 struct list_head free_frames;
748 int frames_count;
749
750 enum ieee80211_band band;
751 int alloc_rxb_skb;
752
753 void (*rx_handlers[REPLY_MAX])(struct iwl_priv *priv,
754 struct iwl_rx_mem_buffer *rxb);
755
756 struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
757
758 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
759 /* spectrum measurement report caching */
760 struct iwl_spectrum_notification measure_report;
761 u8 measurement_status;
762 #endif
763 /* ucode beacon time */
764 u32 ucode_beacon_time;
765
766 /* we allocate array of iwl4965_channel_info for NIC's valid channels.
767 * Access via channel # using indirect index array */
768 struct iwl_channel_info *channel_info; /* channel info array */
769 u8 channel_count; /* # of channels */
770
771 /* thermal calibration */
772 s32 temperature; /* degrees Kelvin */
773 s32 last_temperature;
774
775 /* init calibration results */
776 struct iwl_calib_result calib_results[IWL_CALIB_MAX];
777
778 /* Scan related variables */
779 unsigned long last_scan_jiffies;
780 unsigned long next_scan_jiffies;
781 unsigned long scan_start;
782 unsigned long scan_pass_start;
783 unsigned long scan_start_tsf;
784 struct iwl_scan_cmd *scan;
785 int scan_bands;
786 int one_direct_scan;
787 u8 direct_ssid_len;
788 u8 direct_ssid[IW_ESSID_MAX_SIZE];
789 u8 scan_tx_ant[IEEE80211_NUM_BANDS];
790 u8 mgmt_tx_ant;
791
792 /* spinlock */
793 spinlock_t lock; /* protect general shared data */
794 spinlock_t hcmd_lock; /* protect hcmd */
795 struct mutex mutex;
796
797 /* basic pci-network driver stuff */
798 struct pci_dev *pci_dev;
799
800 /* pci hardware address support */
801 void __iomem *hw_base;
802 u32 hw_rev;
803 u32 hw_wa_rev;
804 u8 rev_id;
805
806 /* uCode images, save to reload in case of failure */
807 u32 ucode_ver; /* version of ucode, copy of
808 iwl_ucode.ver */
809 struct fw_desc ucode_code; /* runtime inst */
810 struct fw_desc ucode_data; /* runtime data original */
811 struct fw_desc ucode_data_backup; /* runtime data save/restore */
812 struct fw_desc ucode_init; /* initialization inst */
813 struct fw_desc ucode_init_data; /* initialization data */
814 struct fw_desc ucode_boot; /* bootstrap inst */
815 enum ucode_type ucode_type;
816 u8 ucode_write_complete; /* the image write is complete */
817
818
819 struct iwl_rxon_time_cmd rxon_timing;
820
821 /* We declare this const so it can only be
822 * changed via explicit cast within the
823 * routines that actually update the physical
824 * hardware */
825 const struct iwl_rxon_cmd active_rxon;
826 struct iwl_rxon_cmd staging_rxon;
827
828 int error_recovering;
829 struct iwl_rxon_cmd recovery_rxon;
830
831 /* 1st responses from initialize and runtime uCode images.
832 * 4965's initialize alive response contains some calibration data. */
833 struct iwl_init_alive_resp card_alive_init;
834 struct iwl_alive_resp card_alive;
835 #ifdef CONFIG_IWLWIFI_RFKILL
836 struct rfkill *rfkill;
837 #endif
838
839 #ifdef CONFIG_IWLWIFI_LEDS
840 struct iwl_led led[IWL_LED_TRG_MAX];
841 unsigned long last_blink_time;
842 u8 last_blink_rate;
843 u8 allow_blinking;
844 u64 led_tpt;
845 #endif
846
847 u16 active_rate;
848 u16 active_rate_basic;
849
850 u8 assoc_station_added;
851 u8 start_calib;
852 struct iwl_sensitivity_data sensitivity_data;
853 struct iwl_chain_noise_data chain_noise_data;
854 __le16 sensitivity_tbl[HD_TABLE_SIZE];
855
856 struct iwl_ht_info current_ht_config;
857 u8 last_phy_res[100];
858
859 /* Rate scaling data */
860 s8 data_retry_limit;
861 u8 retry_rate;
862
863 wait_queue_head_t wait_command_queue;
864
865 int activity_timer_active;
866
867 /* Rx and Tx DMA processing queues */
868 struct iwl_rx_queue rxq;
869 struct iwl_tx_queue txq[IWL_MAX_NUM_QUEUES];
870 unsigned long txq_ctx_active_msk;
871 struct iwl_dma_ptr kw; /* keep warm address */
872 struct iwl_dma_ptr scd_bc_tbls;
873
874 u32 scd_base_addr; /* scheduler sram base address */
875
876 unsigned long status;
877
878 int last_rx_rssi; /* From Rx packet statistics */
879 int last_rx_noise; /* From beacon statistics */
880
881 /* counts mgmt, ctl, and data packets */
882 struct traffic_stats {
883 u32 cnt;
884 u64 bytes;
885 } tx_stats[3], rx_stats[3];
886
887 struct iwl_power_mgr power_data;
888
889 struct iwl_notif_statistics statistics;
890 unsigned long last_statistics_time;
891
892 /* context information */
893 u16 rates_mask;
894
895 u32 power_mode;
896 u32 antenna;
897 u8 bssid[ETH_ALEN];
898 u16 rts_threshold;
899 u8 mac_addr[ETH_ALEN];
900
901 /*station table variables */
902 spinlock_t sta_lock;
903 int num_stations;
904 struct iwl_station_entry stations[IWL_STATION_COUNT];
905 struct iwl_wep_key wep_keys[WEP_KEYS_MAX];
906 u8 default_wep_key;
907 u8 key_mapping_key;
908 unsigned long ucode_key_table;
909
910 /* Indication if ieee80211_ops->open has been called */
911 u8 is_open;
912
913 u8 mac80211_registered;
914
915 /* Rx'd packet timing information */
916 u32 last_beacon_time;
917 u64 last_tsf;
918
919 /* eeprom */
920 u8 *eeprom;
921 struct iwl_eeprom_calib_info *calib_info;
922
923 enum nl80211_iftype iw_mode;
924
925 struct sk_buff *ibss_beacon;
926
927 /* Last Rx'd beacon timestamp */
928 u64 timestamp;
929 u16 beacon_int;
930 struct ieee80211_vif *vif;
931
932 struct iwl_hw_params hw_params;
933
934
935 /* Current association information needed to configure the
936 * hardware */
937 u16 assoc_id;
938 u16 assoc_capability;
939
940 struct iwl_qos_info qos_data;
941
942 struct workqueue_struct *workqueue;
943
944 struct work_struct up;
945 struct work_struct restart;
946 struct work_struct calibrated_work;
947 struct work_struct scan_completed;
948 struct work_struct rx_replenish;
949 struct work_struct rf_kill;
950 struct work_struct abort_scan;
951 struct work_struct update_link_led;
952 struct work_struct auth_work;
953 struct work_struct report_work;
954 struct work_struct request_scan;
955 struct work_struct beacon_update;
956
957 struct tasklet_struct irq_tasklet;
958
959 struct delayed_work set_power_save;
960 struct delayed_work init_alive_start;
961 struct delayed_work alive_start;
962 struct delayed_work scan_check;
963 /* TX Power */
964 s8 tx_power_user_lmt;
965 s8 tx_power_channel_lmt;
966
967
968 #ifdef CONFIG_IWLWIFI_DEBUG
969 /* debugging info */
970 u32 debug_level;
971 u32 framecnt_to_us;
972 atomic_t restrict_refcnt;
973 #ifdef CONFIG_IWLWIFI_DEBUGFS
974 /* debugfs */
975 struct iwl_debugfs *dbgfs;
976 #endif /* CONFIG_IWLWIFI_DEBUGFS */
977 #endif /* CONFIG_IWLWIFI_DEBUG */
978
979 struct work_struct txpower_work;
980 u32 disable_sens_cal;
981 u32 disable_chain_noise_cal;
982 u32 disable_tx_power_cal;
983 struct work_struct run_time_calib_work;
984 struct timer_list statistics_periodic;
985 }; /*iwl_priv */
986
iwl_txq_ctx_activate(struct iwl_priv * priv,int txq_id)987 static inline void iwl_txq_ctx_activate(struct iwl_priv *priv, int txq_id)
988 {
989 set_bit(txq_id, &priv->txq_ctx_active_msk);
990 }
991
iwl_txq_ctx_deactivate(struct iwl_priv * priv,int txq_id)992 static inline void iwl_txq_ctx_deactivate(struct iwl_priv *priv, int txq_id)
993 {
994 clear_bit(txq_id, &priv->txq_ctx_active_msk);
995 }
996
997 #ifdef CONFIG_IWLWIFI_DEBUG
998 const char *iwl_get_tx_fail_reason(u32 status);
999 #else
iwl_get_tx_fail_reason(u32 status)1000 static inline const char *iwl_get_tx_fail_reason(u32 status) { return ""; }
1001 #endif
1002
1003
iwl_tx_queue_get_hdr(struct iwl_priv * priv,int txq_id,int idx)1004 static inline struct ieee80211_hdr *iwl_tx_queue_get_hdr(struct iwl_priv *priv,
1005 int txq_id, int idx)
1006 {
1007 if (priv->txq[txq_id].txb[idx].skb[0])
1008 return (struct ieee80211_hdr *)priv->txq[txq_id].
1009 txb[idx].skb[0]->data;
1010 return NULL;
1011 }
1012
1013
iwl_is_associated(struct iwl_priv * priv)1014 static inline int iwl_is_associated(struct iwl_priv *priv)
1015 {
1016 return (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ? 1 : 0;
1017 }
1018
is_channel_valid(const struct iwl_channel_info * ch_info)1019 static inline int is_channel_valid(const struct iwl_channel_info *ch_info)
1020 {
1021 if (ch_info == NULL)
1022 return 0;
1023 return (ch_info->flags & EEPROM_CHANNEL_VALID) ? 1 : 0;
1024 }
1025
is_channel_radar(const struct iwl_channel_info * ch_info)1026 static inline int is_channel_radar(const struct iwl_channel_info *ch_info)
1027 {
1028 return (ch_info->flags & EEPROM_CHANNEL_RADAR) ? 1 : 0;
1029 }
1030
is_channel_a_band(const struct iwl_channel_info * ch_info)1031 static inline u8 is_channel_a_band(const struct iwl_channel_info *ch_info)
1032 {
1033 return ch_info->band == IEEE80211_BAND_5GHZ;
1034 }
1035
is_channel_bg_band(const struct iwl_channel_info * ch_info)1036 static inline u8 is_channel_bg_band(const struct iwl_channel_info *ch_info)
1037 {
1038 return ch_info->band == IEEE80211_BAND_2GHZ;
1039 }
1040
is_channel_passive(const struct iwl_channel_info * ch)1041 static inline int is_channel_passive(const struct iwl_channel_info *ch)
1042 {
1043 return (!(ch->flags & EEPROM_CHANNEL_ACTIVE)) ? 1 : 0;
1044 }
1045
is_channel_ibss(const struct iwl_channel_info * ch)1046 static inline int is_channel_ibss(const struct iwl_channel_info *ch)
1047 {
1048 return ((ch->flags & EEPROM_CHANNEL_IBSS)) ? 1 : 0;
1049 }
1050
1051 #endif /* __iwl_dev_h__ */
1052